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4ABJ

Co-complex structure of bovine trypsin with a modified Bowman-Birk inhibitor (IcA)SFTI-1(1,14), that was 1,5-disubstituted with 1,2,3- trizol to mimic a cis amide bond

Functional Information from GO Data
ChainGOidnamespacecontents
A0004175molecular_functionendopeptidase activity
A0004252molecular_functionserine-type endopeptidase activity
A0005515molecular_functionprotein binding
A0005576cellular_componentextracellular region
A0005615cellular_componentextracellular space
A0006508biological_processproteolysis
A0007586biological_processdigestion
A0008233molecular_functionpeptidase activity
A0008236molecular_functionserine-type peptidase activity
A0016787molecular_functionhydrolase activity
A0046872molecular_functionmetal ion binding
A0097180cellular_componentserine protease inhibitor complex
A0097655molecular_functionserpin family protein binding
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA A 1247
ChainResidue
AGLU75
AASN77
AVAL80
AGLU85
AHOH2113
AHOH2114

site_idAC2
Number of Residues5
DetailsBINDING SITE FOR RESIDUE DMF A 1248
ChainResidue
AHOH2146
AHOH2159
AASN100
ATHR103
AASN105

site_idAC3
Number of Residues8
DetailsBINDING SITE FOR RESIDUE GOL A 1249
ChainResidue
AGLN138
ACYS139
ALYS162
AVAL205
ACYS206
ASER207
AGLY208
AHOH2198

site_idAC4
Number of Residues10
DetailsBINDING SITE FOR RESIDUE GOL A 1250
ChainResidue
AHIS46
AILE78
AALA135
ATYR154
AHOH2049
AHOH2122
AHOH2199
AHOH2200
AHOH2281
BPLW7

site_idAC5
Number of Residues8
DetailsBINDING SITE FOR RESIDUE GOL A 1251
ChainResidue
AALA133
AILE165
AASP168
APHE184
ALYS231
AHOH2192
AHOH2215
AHOH2222

site_idAC6
Number of Residues6
DetailsBINDING SITE FOR RESIDUE GOL A 1252
ChainResidue
APRO155
AASP156
AVAL157
ALYS159
AHOH2202
AHOH2283

site_idAC7
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SO4 A 1253
ChainResidue
ALYS172
APRO176
AGLY177
AGLN241
AHOH2231
AHOH2232

Functional Information from PROSITE/UniProt
site_idPS00134
Number of Residues6
DetailsTRYPSIN_HIS Serine proteases, trypsin family, histidine active site. VSAAHC
ChainResidueDetails
AVAL59-CYS64

site_idPS00135
Number of Residues12
DetailsTRYPSIN_SER Serine proteases, trypsin family, serine active site. DScqGDSGGPVV
ChainResidueDetails
AASP194-VAL205

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues220
DetailsDomain: {"description":"Peptidase S1","evidences":[{"source":"PROSITE-ProRule","id":"PRU00274","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues3
DetailsActive site: {"description":"Charge relay system"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues7
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsSite: {"description":"Reactive bond","evidences":[{"source":"UniProtKB","id":"P81705","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

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PDB entries from 2025-12-24

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